Danube bridge Deggenau
Coordinates: 48 ° 48 ′ 33 ″ N , 12 ° 58 ′ 13 ″ E
 Danube bridge Deggenau
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| Convicted | Federal motorway 3 | |
| Crossing of | Danube | |
| place | Deggendorf | |
| construction | Cable-stayed bridge | |
| overall length | 848 m | |
| width | 31.8 m | |
| Longest span | 290 m | |
| Construction height | 4,465 m | |
| start of building | 1970 | |
| completion | 1975 | |
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The Danube bridge Deggenau is a 848 m long motorway bridge of the federal highway 3 in Lower Bavaria . The structure crosses the Danube at a crossing angle of 50 degrees between the Deggendorf motorway junction and the Hengersberg junction at river kilometer 2282.52 . The bridge was built between 1970 and 1975.
The bridge consists of a 412.5 m long foreland bridge made of prestressed concrete , which lies in the right Danube foreland , and the steel 435 m long river bridge, a cable-stayed bridge , the pylon of which stands on the left bank of the Danube. The transition between the two bridge sections takes place on a 53 m long and 7 m wide separating pillar .
Foreland bridge
superstructure
The prestressed concrete bridge consists of two separate superstructures and has seven fields with spans of 55.0 m + 5 × 60.5 m + 55.0 m. The superstructures are two-cell prestressed concrete box girders with a constant construction height of 3.0 m. The vertical webs are 56 cm thick, the floor slab has a minimum thickness of 15 cm with a floor slab width of 8.9 m.
The construction took place in 14 concreting sections on falsework .
Foundation and substructures
The superstructures rest on flat , solid reinforced concrete pillar discs with a base area of 12.0 mx 2.0 m.
River bridge
superstructure
Since the bridge piers are at an angle of 40 to 45 degrees to the bridge axis and the main span is twice as long as the secondary span, the single-hip cable-stayed bridge has an unusual rope geometry. The stream opening with a span of 290 m is supported by three tufted rope levels, the first consisting of two parallel cables. The suspension points are arranged in the middle of the bridge cross-section at a distance of 72.5 m - 79.75 m - 62.25 m - 72.5 m. The foreland opening with a span of 145 m is supported by two rope levels. One is anchored in the middle of the field and the other, consisting of the three outer cables of the main opening, in the Passau abutment.
The bridge cross-section consists of a three-cell steel box with a 14 m wide base plate with a cross-section height of 4.465 m in the middle of the cross-section.
The bridge pylon is 87 m high, has a steel box girder as a cross-section and was designed in the shape of a Y. At the bottom the stem has a cross-section of 2.0 m × 4.0 m, above the fork the dimensions of the two stems are 1.85 m × 4 m. The bearing force is a maximum of 120 MN.
Foundation and substructures
The pylon pier with a base area of 25.0 mx 5.0 m is deeply founded on 44 bored piles with a diameter of 120 cm. The pile length is approximately 25 m.
literature
- J. Brunner, R. Schönnagel, D. Feder: The Danube Bridge Deggenau . Steel construction 47 (1978), pages 289 to 294 and 339 to 347
